CN102101160A - Apparatus and method for casting zinc - Google Patents
Apparatus and method for casting zinc Download PDFInfo
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- CN102101160A CN102101160A CN2010106232536A CN201010623253A CN102101160A CN 102101160 A CN102101160 A CN 102101160A CN 2010106232536 A CN2010106232536 A CN 2010106232536A CN 201010623253 A CN201010623253 A CN 201010623253A CN 102101160 A CN102101160 A CN 102101160A
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- zinc
- bar
- rollforming
- zinc bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
- B22D11/047—Means for joining tundish to mould
- B22D11/0475—Means for joining tundish to mould characterised by use of a break ring
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- Manufacture And Refinement Of Metals (AREA)
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Abstract
It is intended to carry out continuous casting of zinc into a rod form under most suitable temperature condition. Zinc casting apparatus (2) comprises vessel (10) to be filled with molten zinc (L); opening (31) passing through the vessel (10) at an inferior position of the vessel (10); and mold part (11) for cooling of the molten zinc (L) to the solidification temperature or below, disposed outside the vessel (10) so as to communicate with the opening (31). Further, sleeve (45) made of a first heat insulation material and sleeve (46) made of a second heat insulation material are disposed in sequence from the side of the vessel (10) between the opening (31) and the mold part (11).
Description
Technical field
The present invention relates to the casting device and the casting method of zinc.And then, the present invention relates to the manufacture method of zinc bar and zinc bar and the manufacture method of zinc ball and zinc ball.
Background technology
Zinc is the common element in electric aspect, so use in various industry, the time processing product and then the secondary operations that zinc are processed as plate, basic configuration such as granular are multiple shape, and makes and be fit to each industrial shape, form and be used.As the manufacture method of existing zinc parts and zinc wire, take to make liquation zinc to flow in the mould and make its method of solidifying, utilize hot-working to extrude the method for zinc, but do the cost height like this, and produce rate variance from billet, can not finish highdensity zinc parts.
Moreover there are not exploitation and open zinc is cast continuously to be bar-shaped technology.The technology of continuous casting of metal cadmium rather than zinc is open in patent documentation 1.In this continuous casting technology, from the liquation of cadmium metal, extract the casting bar of the cadmium of pole shape out, and the casting bar of this cadmium is cut off processing.
The alloy wire of zinc and aluminium is disclosed in patent documentation 2 but not the continuous casing of zinc.In the foundry engieering of patent documentation 2, be added on the addition of the aluminium in the zinc by adjustment, can improve the hot strength and the percentage elongation of alloy wire, thereby realize continuous casting.
Patent documentation 1; TOHKEMY 2000-153343 communique
Is under the bar-shaped situation at the foundry engieering that uses patent documentation 1 record with the zinc continuous casting, zinc is than the cadmium reaction height, if (promptly at the melt vessel of continuous casting apparatus, stove) and the transfer between the mold portion partly use iron metals such as (Fe), then become alloy, the Fe fusion, the zinc liquation can spill, so need partly use the sleeve pipe of pottery in the transfer between melt vessel and the mold portion.
Yet, because the fusing point of zinc is 419 ℃, fusing point 320.9 than cadmium is spent high about 100 ℃, so if cast zinc continuously with the state of temperature of the best, then be subjected to simultaneously from the heating of melt vessel side with from the cooling of mold portion side to the part of mold portion transfer fused zinc from melt vessel, make that because high temperature and the big thermal shock of the temperature difference and breakage the situation that causes the liquation of zinc to spill often takes place.Moreover, be communicated with the part of transfer and connecting under the situation of flowability difference of the fused zinc in the peristome of melt vessel, when part by transfer of the fused zinc (situation that local solidification is also arranged) of flowability difference, the stress big to the partial action of transfer causes breakage.Only merely adopting ceramic sleeve pipe from melt vessel to the part of mold portion transfer fused zinc, can not prevent these breakages, it is very difficult producing suitable state of temperature when carrying out the continuous casting of zinc.
Moreover, if zinc can be set at best state of temperature casts continuously, thereby the liquation of also not knowing zinc is at other the best casting condition that cools off when mold portion advances from melt vessel when casting continuously, so can not make high-quality zinc bar.For example, if when mold portion extracts the excessive velocities of the zinc bar that solidifies by cooling out, the volume of the amount of contraction when then in mold portion, having little time to replenish zinc and solidifying, can be at the outer surface or the inner pore that produces of cakey zinc, the zinc bar heterogeneity of manufacturing and density is low, purity is low becomes the product of quality extreme difference.Under worst situation, even fused zinc might spill from the place ahead of mold portion.
And then, in order suitably to cast fused zinc continuously, not only need to set the speed of extracting zinc bar out, and also need to set suitable condition, but in existing known foundry engieering, do not know such condition about the fused zinc of supplying with mold portion.
In the foundry engieering of patent documentation 2 record, suppress reactivity with Fe, the problem that spills that can avoid above-mentioned transhipment department between melt vessel and mold portion like that to divide the liquation zinc of appearance by in zinc, adding aluminium.Yet this foundry engieering, is made at the zinc casting high from purity under the situation of zinc bar as object with the high allumen of processability, has the hot strength and the low problem of percentage elongation of the high zinc of purity, can not directly use.
Therefore, in existing known foundry engieering, manufacturing density is 7.1g/cm
3, purity is that the high-quality zinc bar more than 99.9% is very difficult.
Summary of the invention
Therefore, the objective of the invention is to zinc continuous casting state of temperature with the best when bar-shaped is being carried out.Further purpose of the present invention is to come workmanship to be higher than the zinc bar of prior art by the continuous casting of zinc.
The result that inventors of the present invention have carried out various researchs is, when casting is filled in zinc liquation in the container, in order to improve its thermal efficiency, preferably heat-barrier material is set in the inboard of container, this heat-barrier material can be single, also can further improve the thermal efficiency by using the different material of multifrequency nature, thereby can improve the durability of container as shown in Figure 2.In addition, fused zinc is because liquid fluidity is good, so preferably by not and between the sealed heat insulating materials such as for example vitrified bonding of fused zinc reaction.
Moreover, when continuous casting zinc is made zinc bar, adjustment is filled in the liquid measure of the fused zinc in the container etc., the liquid level that will be supplied to the fused zinc of mold portion via the peristome of perforation container is set at and exceeds more than the 250mm upward from peristome, and for example use pinch roll etc. will extract out at the zinc that mold portion solidify by cooling with the described later average draw speed below the 9mm/sec, can carry out best continuous casting thus, thereby produce high-quality zinc bar.Particularly under the situation of when mold portion extracts cakey zinc out, extracting out intermittently, set sufficient dwell time between the action, can produce high-quality zinc bar by extracting out at each.Specifically, stop to move in the extraction circulation of zinc bar of alternate repetition at the extraction action of given time (hereinafter referred to as finding time) and given time (hereinafter referred to as dwell time), setting find time and the situation of dwell time under, preferably set the zinc liquation with respect to extracting the dwell time that distance is fully solidified out.
The present invention finishes according to this opinion.That is,, provide a kind of casting device of zinc, it is characterized in that the casting device of this zinc has: the container of filling fused zinc according to the present invention; Connect the peristome of said vesse; With mold portion, this mold portion is in the outside of said vesse and above-mentioned peristome is provided with communicatively and fused zinc is cooled to below the setting temperature, is disposed with sleeve pipe that is formed by the 1st heat-barrier material and the sleeve pipe that is formed by the 2nd heat-barrier material from the said vesse side between above-mentioned peristome and above-mentioned mold portion.
Above-mentioned the 1st heat-barrier material can be a pottery.Moreover above-mentioned the 2nd heat-barrier material can comprise ceramic fibre.
And then, above-mentioned peristome can be constituted the shape of slit that along continuous straight runs extends, and with the longitudinally setting of above-mentioned mold portion along above-mentioned peristome.Moreover said vesse can be until the highly-filled fused zinc that exceeds upward from above-mentioned peristome more than the 250mm.
Moreover, according to the present invention, provide a kind of zinc bar, it is characterized in that this zinc bar density is 7.1g/cm
3, purity is more than 99.9%.
Moreover, according to the present invention, a kind of manufacture method of zinc bar is provided, make zinc bar by continuous casting, that is, the fused zinc in the container is cooled off at the peristome via this container of perforation when mold portion advances, be it is characterized in that, the height of the liquid level of the fused zinc in the said vesse is exceeded more than the 250mm upward from above-mentioned peristome, and extract the zinc that solidifies by cooling out with the average draw speed below the 9mm/sec from above-mentioned mold portion.
The temperature of the fused zinc in the above-mentioned peristome can be more than 530 ℃.Moreover, can when extracting above-mentioned cakey zinc out from above-mentioned mold portion, extract out intermittently.
Moreover, according to the present invention, provide a kind of manufacture method of zinc ball, by with the zinc bar rollforming, cut off with set interval from front end and to make the zinc ball, it is characterized in that when rollforming, the temperature of zinc bar is set at more than 70 ℃, below 180 ℃.
In the manufacture method of above-mentioned zinc ball, the temperature in the rollforming machine can be set at more than 70 ℃, below 90 ℃.
Moreover, according to the present invention, provide a kind of zinc ball, it is characterized in that density is 7.1g/cm
3More than, diameter is 18～55mm.
According to the present invention, zinc being continuously cast into when bar-shaped, can reduce the thermal shock that causes because of big temperature difference to the partial action between melt vessel and the mold portion, prevent its breakage, thereby can cast continuously with the state of temperature of the best.Moreover can to produce density be 7.1g/cm
3, purity is the high-quality zinc bar more than 99.9%.
Description of drawings
Fig. 1 is the pie graph of zinc bar manufacturing installation 1 of continuous casting apparatus 2 that possesses the zinc of the 1st embodiment of the present invention.
Fig. 2 is that the section to the vertical direction of the part of the inside of the mold portion 11 of the lower position of the lateral surface of cutting machine 14 sides that are arranged on melt vessel 10 and melt vessel 10 amplifies the amplification profile of expression.
Fig. 3 is the side view from the observed mold of cutting machine 14 sides portion 11.
Fig. 4 is the pie graph of formation of manufacturing installation M of the zinc ball B of expression the 2nd embodiment of the present invention.
Fig. 5 is the pie graph at the observed rollforming machine 3 of horizontal plane.
Label declaration
1 zinc bar manufacturing installation
The continuous casting apparatus of 2 zinc bars
3 rollforming machines
4,6 take out of platform
5 supporting stations
7 conveyance platforms
10 melt vessels
11 mold portions
12 conveyance workbench
13 pinch rolls
14 cutting machines
20 founding materialses
The heat-barrier material of 21 bottom surfaces
22 outer walls
25 heat resisting bricks
30 discharge portions
31 peristomes
35 carbon sleeve pipes
36 water cooling copper sleeves
40 inflow entrances
41 flow exports
45 porcelain bushings
46 ceramic fibre sleeve pipes
50 fixed heads
60 housings
65,66 rollforming rollers
The protuberance of 70 rollforming rollers
71,76 cooling devices
75,77 temperature sensors
B zinc ball
The L fused zinc
The manufacturing installation of M zinc ball
The S zinc bar
The specific embodiment
Following with reference to description of drawings preferred implementation of the present invention.In addition, in this specification and accompanying drawing,, use same label, omit repeat specification about having the key element that identical function constitutes in fact.
Fig. 1 is the pie graph of manufacturing installation 1 (hereinafter referred to as the zinc bar manufacturing installation) of zinc bar of continuous casting apparatus 2 that possesses the zinc of the 1st embodiment of the present invention.As shown in Figure 1, zinc bar manufacturing installation 1 has such formation: be provided with cutting machine 14 in the downstream of casting out the continuous casting apparatus 2 of zinc bar S from fused zinc L continuously, 14 couples of zinc bar S by continuous casting apparatus 2 castings of this cutting machine cut off.In addition, in Fig. 1, processed fused zinc L (zinc bar S) along continuous straight runs is advanced from left to right.Dispose in the downstream of cutting machine 14 and to take out of platform 4 what cut zinc bar S (to vertical with the paper of Fig. 1 from inwards direction nearby) took out of.In the 1st embodiment of the present invention, continuous casting apparatus 2, cutting machine 14 and take out of the top that platform 4 is arranged on supporting station 5.
As shown in Figure 1, melt vessel 10 is the open rectangular shape of upper surface.Be provided with the electric furnace (not shown) of zinc on the top of melt vessel 10, replenish fused zinc L, and remain on more than the set height (for example 300mm) by the height of the liquid surface regulator (not shown) that uses laser with liquid level from this electric furnace.In addition, the set height setting of liquid level is for from the peristome described later 31 that is arranged at melt vessel 10 value more than the 250mm upward.The height of liquid level is also referred to as liquation and presses (unit is mmH).In the 1st embodiment of the present invention, melt vessel 10 possesses the burner (not shown) that can heat the fused zinc L of inside, can remain more than 500 ℃ being filled in inner fused zinc L heating and constant temperature.Moreover melt vessel 10 possesses the agitating device (not shown) that can stir inner fused zinc L.
Fig. 2 is that the section to the vertical direction of the part of the inside of the mold portion 11 of the lower position of the lateral surface of cutting machine 14 sides that are arranged on melt vessel 10 and melt vessel 10 amplifies the amplification profile of expression.As shown in Figure 2, the inner surface of melt vessel 10 is cast material 20 coverings.Moreover, be provided with for example outer wall 22 of iron etc. at the outer bottom and the lateral surface of melt vessel 10.In the bottom of melt vessel 10, between the outer wall 22 in the founding materials 20 of inboard and the outside from above be disposed with insulating brick 25 and heat-barrier material 21.At the sidepiece of melt vessel 10, as the back illustrates, remove the part that is provided with mold portion 11, between the outer wall 22 in the founding materials 20 of inboard and the outside, be provided with heat resisting brick 25.
As shown in Figure 2,, between the outer wall 22 in the founding materials 20 of inboard and the outside, be provided with the discharge portion 30 that forms by the founding materials identical 20 with inner surface at the lower position of the sidepiece of the melt vessel 10 that is provided with mold portion 11, rather than heat resisting brick 25.Be provided with in addition along continuous straight runs connect this discharge portion 30 with and the founding materials 20 of both sides and the peristome 31 of outer wall 22.This peristome 31 becomes the single shape of slit that connects founding materials 20, discharge portion 30 and outer wall 22 and along continuous straight runs extension.Moreover peristome 31 is communicated with the hole of the single shape of slit of the along continuous straight runs extension of porcelain bushing 45 described later in the position of outer wall 22.In addition, as shown in Figure 2, discharge portion 30 has the shape of giving prominence to laterally along peristome 31 in the position of outer wall 22, and the rectangle inner surface of the peristome 31 of the outer surface of this protuberance and outer wall 22 is fit to.That is, between peristome 31 and outer wall 22, clip discharge portion 30.On outer wall 22, be provided with the mold portion 11 of 6 drums that are communicated with peristome 31 respectively along the longitudinally of peristome 31.Fig. 3 is the side view from the observed mold of cutting machine 14 sides portion 11.
As shown in Figures 2 and 3, each inner surface in 6 mold portions 11 disposes the carbon sleeve pipe 35 that is formed by carbon respectively.In the 1st embodiment of the present invention, the internal diameter of 6 carbon sleeve pipes 35 is all identical and less than the internal diameter of 6 circular ports of peristome 31.Moreover, the water cooling copper sleeve 36 of all these 6 mold portions 11 of covering is installed at the outer surface of 6 mold portions 11.Be provided with inflow entrance 40 at melt vessel 10 side lower parts of water cooling copper sleeve 36 to its internal feed cooling water.Moreover, on the top of water cooling copper sleeve 36,, be respectively arranged with 2 outflows 41 that the cooling water of being supplied with is discharged with respect to each mold portion 11.
Between carbon sleeve pipe 35 and peristome 31, be disposed with porcelain bushing 45 that forms by pottery and the ceramic fibre sleeve pipe 46 that forms by ceramic fibre foundry goods as the 2nd heat-barrier material as the 1st heat-barrier material from melt vessel 10 sides.As porcelain bushing 45 employed potteries, preferably low with the wetability of zinc (promptly reactive) and pottery that the thermal shock tolerance is strong in the 1st embodiment of the present invention, as such pottery, uses silica (SiO
2) account for 99.7 quality %, remainder by aluminium oxide (Al
2O
3) pottery that constitutes.Moreover, in the 1st embodiment of the present invention, as ceramic fibre sleeve pipe 46 employed ceramic fibre foundry goods, use contain silica and aluminium oxide, with the fiber foundry goods that wetability (i.e. reactivity) is low and thermal insulation is high of zinc.This ceramic fibre sleeve pipe 46 is made by after reinforcing ceramic fibre by adhesive this adhesive being volatilized.
As shown in Figure 2, porcelain bushing 45 is fixed on the fixed head 50 that is fixed in outer wall 22 by fixtures such as screw (not shown).At this moment, as shown in Figure 2, the founding materials of discharge portion 30 (promptly identical with founding materials 20 founding materials) is between the casting station and outer wall 22 of the liquation zinc of porcelain bushing 45.Porcelain bushing 45 is portion within it, is communicated with and the hole of the single shape of slit that along continuous straight runs extends is 6 circular ports arranged side by side in the horizontal direction in the position branch of outer wall 22 from peristome 31 sides.The internal diameter in the hole of the shape of slit of porcelain bushing 45 reduces towards carbon sleeve pipe 35 sides from peristome 31 sides, the internal diameter coupling of the peristome 31 of a side and discharge portion 30, the internal diameter coupling of the opposing party and carbon sleeve pipe 35.Porcelain bushing 45 and the carbon sleeve pipe 35 ceramic fibre sleeve pipe 46 through being arranged between both (45,35) connects.In the present embodiment, this ceramic fibre sleeve pipe 46 is embedded in the endless groove that forms by porcelain bushing 45 and carbon sleeve pipe 35 in the internal diameter of ceramic fibre sleeve pipe 46 mode identical with the internal diameter of carbon sleeve pipe 35.Moreover porcelain bushing 45 is connected with the outer circumferential side of carbon sleeve pipe 35 at ceramic fibre sleeve pipe 46 with being in contact with one another, by reducing the area of this connecting portion, can improve the heat-insulating efficiency of porcelain bushing 45 and carbon sleeve pipe 35.And then, porcelain bushing 45 and carbon sleeve pipe 35 are not in contact with one another, use formation such as other heat-barrier material to imbed the groove of ceramic fibre sleeve pipe 46.
As shown in Figure 1, conveyance workbench 12 has a plurality of carrying rollers that possess with the rotating shaft of the longitudinally quadrature of zinc bar S along the conveyance direction, is positioned in the zinc bar S of upper surface from the guiding of melt vessel 10 side cut off lines 14 side along continuous straight runs.In the 1st embodiment of the present invention, with 6 modes that zinc bar S is corresponding that are shaped by 6 mold portions 11, be provided with 6 along direction and list a plurality of carrying rollers of stating with conveyance direction quadrature.
Pinch roll 13 is made of a pair of up-down rollers that possesses with the rotating shaft of the longitudinally quadrature of zinc bar S.On up-down rollers, along a plurality of grooves of periphery in the position that is separately positioned on coupling up and down, pinch roll 13 by coupling up and down between the groove clamping zinc bar S rotation, from mold portion 11, extract zinc bar S out.In the 1st embodiment of the present invention, on the position corresponding, be respectively arranged with 6 grooves with 6 zinc bar S that are formed separately by 6 mold portions 11.
Cutting machine 14 is cut to set length with each zinc bar S at longitudinally along once cutting off 6 zinc bar S with the direction of longitudinally quadrature.
Use Fig. 1～Fig. 3 illustrates the zinc bar manufacturing installation 1 of the zinc bar that use constitutes as mentioned above, casts and produce the method for zinc bar S from fused zinc L.
Fused zinc L is filled in the melt vessel 10 from the electric furnace (not shown) of the zinc on the top that is arranged on melt vessel 10, and constant temperature remains more than 530～580 ℃ when using agitating device (not shown) to stir.At this moment, for the temperature that makes fused zinc L does not reduce, use burner (not shown) that fused zinc L is suitably heated.
As shown in Figure 2, in melt vessel 10, send to 6 mold portions 11, begin the manufacturing of zinc bar S thus by peristome 31 by being stirred in the fused zinc L that remains the temperature more than 530 ℃ in the melt vessel 10 equably.In addition, send, make that the fused zinc L in the melt vessel 10 reduce, then at any time from electric furnace (not shown) additional fused zinc L to melt vessel 10 in of zinc by this.In addition, use liquid surface regulator (not shown) that the liquid level of the fused zinc L in the melt vessel 10 is remained set height (for example 300mm).This set height setting is, the liquid level of fused zinc L is that the peristome 31 from the founding materials 20 that connects melt vessel 10 exceeds the value more than the 250mm upward.This is the value that increases the intensity of the zinc bar S that continuous casting fused zinc L obtains fully.
The fused zinc L that sends towards 6 mold portions 11 in melt vessel 10 advances peristome 31 by the founding materials 20 and the discharge portion 30 of melt vessel 10, in the position of outer wall 22, is advanced then by 6 circular port branches in porcelain bushing 45.The ceramic fibre sleeve pipe 46 of the fused zinc L that branch advances then in porcelain bushing 45 by being communicated with each circular port enters respectively in each carbon sleeve pipe 35 of 6 mold portions 11.In the 1st embodiment of the present invention, the temperature of the fused zinc L in the peristome 31 become with melt vessel 10 in 530～580 ℃ of being roughly the same of the temperature of fused zinc L.In addition, in the 1st embodiment of the present invention, the temperature of the fused zinc in the peristome 31 is used chromel-alumel thermocouple, in the position measurement of founding materials shown in Figure 2 30.The adjustment of fused zinc L is by being undertaken by the top of the fused zinc L in burner (not shown) the heating melt vessel 10.
In the inside of the water cooling copper sleeve 36 that is installed in carbon sleeve pipe 35 outer surfaces, circulate from inflow entrance 40 inflows of melt vessel 10 side lower parts and the cooling water that flows out from the outflow 41 on top, so the fused zinc L that advances in carbon sleeve pipe 35 is accompanied by the cooling gradually of advancing.By regulating the temperature and the flow of cooling water, make fused zinc L in the carbon sleeve pipe 35 of mold portion 11, be cooled to below the freezing point (419), and be the zinc bar S of drum from the continuous casting of conveyance direction downstream.In addition, in the 1st embodiment of the present invention, the temperature of the fused zinc L of the entrance side of carbon sleeve pipe 35 becomes 420～430 ℃.
As shown in Figure 1, after 6 zinc bar S that cast continuously out respectively by 6 mold portions 11 withdraw from the carbon sleeve pipe 35 of mold portion 11, along continuous straight runs is advanced, and via the upper surface of the conveyance workbench 12 that guides zinc bar S, along continuous straight runs enters between the up-down rollers of pinch roll 13.Enter between 6 zinc bar S each groove that is clamped in coupling up and down respectively of pinch roll 13, from each mold portion 11, extract and pass out to cutting machine 14 sides that are positioned at conveyance direction downstream out by the rotation of pinch roll 13 by the up-down rollers of pinch roll 13.That is, zinc bar S is applied in advancing from the along continuous straight runs of melt vessel 10 side cut off lines 14 sides.In the 1st embodiment of the present invention, utilize pinch roll 13 to regulate the average draw speed of zinc bar S.This average draw speed is defined as the length that zinc bar S is drawn out of during certain certain hour.In addition, the average draw speed under the situation of interrupted extraction is defined as, during the certain hour of the total of finding time that dwell time that zinc bar S stops and zinc bar S are drawn out of, the length that is drawn out of of zinc bar S.
In the 1st embodiment of the present invention, the extraction of 13 couples of zinc bar S of pinch roll is carried out intermittently by following action repeatedly, promptly, the draw speed of pinch roll 13 is set at 40mm/sec, make pinch roll 13 rotations 0.2 second, zinc bar S extraction 8mm was stopped 0.8 second, the action that fused zinc L is solidified then in 1 second in mold portion 11.Therefore, in this case, the average draw speed of zinc bar S is
{(0.2×40)+(0.8×0)}(mm)/(0.2+0.8)(sec)＝0.8mm/sec。
6 zinc bar S along continuous straight runs being sent and withdraw from pinch roll 13 by pinch roll 13 are advanced and are entered in the cutting machine 14 as described above.When 6 zinc bar S at cutting machine 14 with take out of on the platform 14 when longitudinally reaches set length, 6 zinc bar S are cut off machine 14 along once cutting off with the direction of longitudinally quadrature.Like this, taking out of residual 6 zinc bar S that cut off by cutting machine 14 on the platform 4.
Be cut off machine 14 cut-outs as mentioned above and remain in 6 zinc bars of taking out of on the platform 4 and taken out of the outside, thereby finish a series of manufacturing step.
According to above the 1st embodiment of the present invention, by between the peristome 31 and mold portion 11 of melt vessel 10, set gradually porcelain bushing 45 and ceramic fibre sleeve pipe 46 from melt vessel 10 sides, relaxed from the cooling of carbon sleeve pipe 35 sides influence the porcelain bushing 45 of the high temperature that is exposed to fused zinc L in peristome 31 sides, thus can abirritation in the thermal shock of carbon sleeve pipe 35.And then, by discharge portion 30 is set, and this discharge portion 30 is formed by the founding materials 20 identical with the founding materials 20 of the inner surface that is arranged on melt vessel 10, can reduce the influence from the heating of peristome 31 sides of porcelain bushing 45, thereby further abirritation is in the thermal shock of carbon sleeve pipe 35.
As mentioned above, can relax from the thermal shock of melt vessel 10 to the temperature difference of porcelain bushing 45 effect of the 11 transfer fused zinc L of mold portion, therefore from fused zinc L continuous casting zinc bar S the time, can be with the temperature of the fused zinc L of melt vessel 10 sides of porcelain bushing 45 and mold portion 11 these both sides of side, be set at the suitable temperature of difficulty in existing technique known.Specifically, the temperature of the fused zinc L of peristome 31 sides of porcelain bushing 45 can be set at optimum temperature promptly more than 530 ℃, at this moment fused zinc L's is mobile high, solidifies Shi Buhui and produce concavo-convex on the cast body surface in carbon sleeve pipe 35.Moreover the temperature of the fused zinc L of carbon sleeve pipe 35 sides of porcelain bushing 45 can be set at promptly 420～430 ℃ of optimum temperatures, at this moment fused zinc L suitably solidifies in carbon sleeve pipe 35.
And then, by adjusting the liquid level of the fused zinc L in the melt vessel 10, the liquid level of fused zinc L is set at from peristome 31 exceeds height more than the 250mm upward, and extract out with the average draw speed below the 9mm/sec from mold portion by the zinc bar S that pinch roll 13 will solidify by cooling in mold portion 11, produce pore in the time of can preventing the continuous casting in mold portion 11.This is in order to set as described above, can make fused zinc L to the supply of the entrance side of mold portion 11 and cakey zinc bar S ratio optimization, make fused zinc L before solidifying can follow the zinc bar S after solidifying reliably from the discharge of the outlet side of mold portion 11.Thus, can produce and possess the extremely high-quality zinc bar S of homogeneous, high density and highly purified excellent characteristic.Particularly can produce with existing known foundry engieering manufacturing difficulty, density is 7.1g/cm
3Purity is the very high-quality zinc bar more than 99.9%.
Moreover, extracting out intermittently from mold portion 11 under the situation of zinc bar S, for example extract action out and stop action and be set at alternately repeatedly every given time, in a circulation of extracting zinc bar out, it (is 0.25 second with respect to finding time for example that dwell time is set at the value more than 3 times of finding time, dwell time is set at 0.75 second), thus, even in repeatedly extraction action intermittently, also can make fused zinc L before solidifying follow zinc bar S after solidifying reliably, prevent that the zinc bar S of manufacturing from producing the situation of pore.
As the 2nd embodiment of the present invention, can make zinc ball B from the zinc bar S that the zinc bar manufacturing installation 1 that uses the 1st embodiment of the present invention shown in Figure 1 is made.Fig. 4 is the pie graph of formation of manufacturing installation M of the zinc ball B of expression the 2nd embodiment of the present invention.
As shown in Figure 4, the manufacturing installation M of zinc ball B has following formation: promptly, in the downstream of zinc bar manufacturing installation 1 rollforming machine 3 is set, 3 couples of zinc bar S that made by this zinc bar manufacturing installation 1 of this rollforming machine carry out rollforming and make zinc ball B.Zinc bar manufacturing installation 1 constitutes in the same manner with the 1st embodiment of the present invention, and continuous casting apparatus 2 can produce the zinc bar S of 99.9% above purity.Downstream at the cutting machine 14 of zinc bar manufacturing installation 1 disposes conveyance platform 7, this conveyance platform 7 with cut zinc bar S conveyance to rollforming machine 3.In addition, in Fig. 4, processed fused zinc L (zinc bar S) along continuous straight runs is advanced from left to right.Dispose in the downstream of rollforming machine 3 and to take out of platform 6, this is taken out of platform 6 zinc ball B (to vertical with the paper of Fig. 4 from inwards direction nearby) is taken out of.In the 2nd embodiment of the present invention, zinc bar manufacturing installation 1, conveyance platform 7, rollforming machine 3 and take out of the top that platform 6 is arranged on supporting station 5.
Conveyance platform 7 has a plurality of carrying rollers that possess with the rotating shaft of the longitudinally quadrature of zinc bar S along the conveyance direction, so that the zinc bar S that will be positioned in its upper surface is from guiding of melt vessel 10 side direction rollforming machines 3 side along continuous straight runs and conveyance.Moreover, identical with conveyance workbench 12, with 6 modes that zinc bar S is corresponding that enter via cutting machine 14, along the direction with conveyance direction quadrature be provided with 6 row a plurality of carrying rollers.In addition, conveyance platform 7 constitutes and can move along the direction with the conveyance direction quadrature of zinc bar S, so that 6 zinc bar S that remain in the upper surface of conveyance platform 7 after being cut off by cutting machine 14 can be configured in one by one the entrance side of rollforming machine 3.
Use Fig. 5 that the formation of rollforming machine 3 is described.Fig. 5 is the pie graph at the observed rollforming machine 3 of horizontal plane.As shown in Figure 5, rollforming machine 3 is the formations that possess a pair of rollforming roller 65,66 in the housing 60 of rectangular shape roughly.These rollforming rollers 65,66 can enter into the zinc bar S in the housing 60 and carry out rollforming from the conveyance along continuous straight runs of sandwich by conveyance platform 7.In the 2nd embodiment of the present invention, each rotating shaft of rollforming roller 65,66 constitutes with zinc bar S and is configured on the same horizontal plane, and in the conveyance direction downstream of zinc bar S to zinc bar S side slight inclination.In addition, the rotating shaft of rollforming roller 65,66 also can be configured to parallel with zinc bar S.
As shown in Figure 5, on rollforming roller 65,66, be respectively arranged with spiral-shaped protuberance 70. Rollforming roller 65,66 constitutes, by rotations respectively such as motors (not shown), make the protuberance 70 of two rollforming rollers 65,66 on longitudinally, zinc bar S with set interval (being spiral-shaped spacing) clamping, when exerting pressure, make its rotation, zinc bar S is being compressed along the conveyance direction sending into.As mentioned above, rollforming roller 65,66 is configured in conveyance direction downstream more near zinc bar S, so zinc bar S is further compressed along with advancing to conveyance direction downstream.By this compression zinc bar S is cut off with set interval successively at the front end of longitudinally from conveyance direction downstream, thereby form zinc ball B.Formed zinc ball B constitutes because gravity falls and move to taking out of platform 6 to downside.In addition, in the 2nd embodiment of the present invention, rollforming roller 65,66 constitutes to same direction rotation.
As shown in Figure 5, rollforming machine 3 possesses the cooling device 71 of cooling zinc bar S from the entrance side of the zinc bar S of conveyance platform 7 in conveyance.In the 2nd embodiment of the present invention,, for example use towards the flexible pipe of cooling mediums such as zinc bar S injection cooling water as cooling device 71.Moreover, be provided with the temperature sensor 75 of the temperature that can measure zinc bar S at the entrance side of rollforming machine 3.Like this, regulate the water yield of the cooling water that sprays from cooling device 71 and temperature etc., thereby can control the temperature of the zinc bar S before the rollforming according to the temperature of measuring by temperature sensor 75.In addition, additive method as the temperature of the zinc bar S of control before the rollforming, also can be adjusted at the cooling of mold portion 11 in the outlet side of continuous casting apparatus 2 temperature by sensor measurement zinc bar S, and management until after the cut-out, the time of rollforming of operation.
And then, the cooling device 76 that cools off in the housing 60 of rollforming machine 3, also being provided with and measure the temperature sensor 77 of the temperature in the housing 60 to housing 60.In the 2nd embodiment of the present invention, use the cooling device 76 that sprays cooling water towards zinc bar S.Like this, can regulate the water yield of the cooling water that sprays from cooling device 76 and temperature etc. according to the temperature of measuring by temperature sensor 77, thus the temperature in the control rollforming machine 3.
Use Fig. 4 and Fig. 5 that the manufacturing installation M of the zinc ball of the 2nd embodiment of the present invention that use constitutes as mentioned above is described, cast out zinc bar S, and make the method for zinc ball B from the zinc bar S that casts out from fused zinc L.
Use zinc bar manufacturing installation shown in Figure 41 and the 1st embodiment of the present invention similarly to make zinc bar S.Like this, 6 zinc bar S that cut off by cutting machine 14 remain on the conveyance platform 7.Cut off and remain in 6 zinc bar S on the conveyance platform 7 by the moving of conveyance platform 7 (with the direction of conveyance direction quadrature mobile) by cutting machine 14, be configured in the entrance side of rollforming machine 3 one by one successively.The zinc bar S of entrance side that is configured in rollforming machine 3 is by 7 conveyances of conveyance platform, and enters in the rollforming machine 3 from front end as illustrated in fig. 5.Entering the rollforming operation that zinc bar S is carried out with this carries out as described later.Enter zinc bar S in the rollforming machine 3 when the entrance side by rollforming machine 3, be cooled to set temperature thereby spray cooling water from flexible pipe as cooling device 71.In the 2nd embodiment of the present invention, the temperature of the zinc bar S of the entrance side of rollforming machine 3 is set at 120 ℃.Preferably, the temperature of zinc bar S is set at 70～180 ℃ when rollforming.
After the rollforming end of job of the first zinc bar S that enters, remain an entrance side that is configured in rollforming machine 3 among 5 zinc bar S, with first similarly by 7 conveyances of conveyance platform and enter in the rollforming machine 3, carry out the rollforming operation.Below similarly identical repeatedly step is used up until the zinc bar S that remains on the conveyance platform 7.Then, when the rollforming operation of 6 zinc bar S was all over, empty conveyance platform 7 was back to the original position that stops when cutting machine 14 cuts off zinc bar S.6 zinc bar S that sent by pinch roll 13 are cut off machine 14 cut-outs, supply with 6 new zinc bar S on conveyance platform 7.During 6 zinc bar S of each later on supply, similarly carry out above-mentioned operation repeatedly.
Rollforming operation in rollforming machine 3 describes with regard to zinc bar S.Thereby the zinc bar S that enter in the rollforming machine 3 compression of exerting pressure by the spiral-shaped protuberance 70 of a pair of rollforming roller 65,66 from sandwich, meanwhile are rotated, and are sent to along the longitudinally of zinc bar S and take out of platform 6 sides.Each rotating shaft tilted configuration of two rollforming rollers 65,66 with in conveyance direction downstream more near zinc bar S, so zinc bar S is further compressed along with advancing to conveyance direction downstream, finally be cut to set length, thereby form zinc ball B at longitudinally.Though in carrying out the rollforming machine 3 of rollforming operation,, sprayed cooling water and be cooled to set temperature from flexible pipe as cooling device 76 owing to rollforming produces heat.In the 2nd embodiment of the present invention, the temperature in the rollforming machine 3 is set at 80 ℃.In addition preferably, the temperature in the rollforming machine 3 is set at 70～90 ℃ when rollforming.
Formed zinc ball B is owing to gravity falls and move to taking out of platform 6 to downside.Moving to the zinc ball B that takes out of platform 6 is taken out of platform 6 and is taken out of.
According to above the 2nd embodiment of the present invention, when zinc bar S is carried out rollforming, 71 couples of zinc bar S cool off by cooling device, and with the temperature of zinc bar S be set at more than 70 ℃, below 180 ℃, can make the processability optimization of zinc bar S thus, can produce with existing known manufacturing technology since following difficulties such as reason, diameter is the spherical zinc ball B of 10～55mm.
For example in the manufacturing technology of No. 3281019 disclosed zinc ball of communique of Japan Patent, fused zinc from nozzle drip and during being disposed at the cooling medium of bottom cooled and solidified, produce spherical zinc ball thus, but be difficult to make the zinc ball that diameter surpasses 10mm.This be because, when in order to make that diameter surpasses the zinc ball of 10mm and when increasing the mouth of nozzle of the fused zinc of dripping, the surface tension of fused zinc is less than the gravity of fused zinc, thereby fused zinc can flow out from the mouth of nozzle.
Moreover, in the manufacturing technology of the disclosed zinc ball of Japanese kokai publication sho 55-97862 communique, fused zinc is filled in the hemispheric mold that is arranged on the conveyer belt, progressive forming goes out hemispheric zinc, and two hemispheric zinc that being shaped force together, make spherical zinc ball thus, but owing to utilize mold to form, so air can be sneaked in the time of often in fused zinc flows into mold, can produce blank part when making the fused zinc cooling and solidifying, being difficult to make diameter is the following undersized zinc ball of 60mm.Special existence not only can not make the outer surface of the zinc ball of manufacturing form desirable sphere, and the problem that sectional area is about 10% pore can appear in portion within it.
Therefore, the zinc ball that utilizes the disclosed manufacturing technology of above-mentioned Japanese kokai publication sho 55-97862 communique to make is of poor quality, and density also has only 6.4g/cm
3About, very low, so the industrial scope of application extremely is restricted.For example during the fused zinc in replenishing calciner, under the situation of using the low-quality zinc ball of making by above-mentioned manufacturing technology, may make the blast of fused zinc generation steam owing to be included in the air of zinc ball inside, abnormally dangerous.
In addition, when utilizing the 2nd embodiment of the present invention to make the zinc ball, when using cooling device 76 that the temperature rollforming machine 3 in is set at more than 70 ℃, below 90 ℃ the time, can more suitably carries out the rollforming of zinc bar S and process.Relative therewith, surpass under 180 ℃ the situation in the temperature of the zinc bar S of rollforming because zinc bar S is soft excessively, thus by rollforming roller 65,66 when exert pressure in both sides, shape can break down, thereby zinc ball B can not be fabricated to the high sphere of sphericity.Moreover, the temperature of zinc bar S less than 70 ℃ situation under because zinc bar S is really up to the mark, so when carrying out rollforming by rollforming roller 65,66, the grinding resistance height of zinc bar S can not produce the zinc ball B of the high sphere of sphericity.Owing to be the high sphere of sphericity, so can easily roll, and the filling rate when conveyance is also high, has the effect that operating efficiency and conveyance efficient significantly improve according to the zinc ball B of the present application manufacturing.In addition, aforesaid so-called sphericity height specifically is meant, under situation about zinc ball B being placed on the long inclined plane of the 1m that are inclined relative to horizontal 15 degree, can not stop halfway but the shape that tumbles along the inclined plane.
And then according to the 2nd embodiment of the present invention, by the zinc ball B that is shaped from zinc bar S rollforming, can produce density is 7.1g/cm
3More than, purity is zinc ball B more than 99.9%, very high-quality.Moreover, when directly zinc ball B is made in casting from fused zinc, can remove or reduce the pore that produces in inside.Therefore, the zinc ball B of the present application can be used in that zinc ball by existing known manufacturing technology manufacturing can not use or unworkable various industry in.For example, the zinc ball B of the present application since within it portion have cavities such as pore hardly, so under situation about using as the zinc that the fused zinc in the calciner is replenished, the possibility that the steam blast takes place is low, can carry out safe replenishing.
Above with reference to description of drawings preferred implementation of the present invention, but the invention is not restricted to this example.This area practitioner is in the category of the technological thought that claims are put down in writing, and nature can be expected various modifications or revise example, also belong to technical scope of the present invention certainly about these.
In the above-described embodiment, be illustrated as the situation of the casting device of zinc about using the continuous casting apparatus 2 cast continuously, but the casting device of zinc also can be the casting device beyond the continuous casting apparatus.
In the above-described embodiment, the situation that does not comprise the formation of cutting machine 14 about the continuous casting apparatus 2 of zinc is illustrated, but the continuous casting apparatus of zinc 2 also can be the formation that comprises cutting machine 14.
In the above-described embodiment, about the container of filling for fused zinc L is that the situation that possesses the melt vessel 10 of the burner (not shown) that the fused zinc L that is filled in inside is heated is illustrated, but container also can possess burner heating units in addition such as heater, also can use stove as container.
In the above-described embodiment, be cast the situation that material 20 covers about the inner surface of melt vessel 10 and be illustrated, but also can use material beyond the founding materials as the material that covers.
In the above-described embodiment, illustrated by using silica (SiO
2) account for 99.7 quality %, remainder by aluminium oxide (Al
2O
3) pottery that the constitutes meaning that can achieve the goal as the 1st heat-barrier material, but pottery also can be selected other formations, in addition, also can select material beyond the pottery as the 1st heat-barrier material.
In the above-described embodiment, illustrated by use and contained the meaning that the ceramic fibre foundry goods of silica and aluminium oxide can achieve the goal as the 2nd heat-barrier material, but also can select material beyond the ceramic fibre foundry goods as the 2nd heat-barrier material.
In the above-described embodiment, illustrated by after reinforcing ceramic fibre, this adhesive being volatilized and made ceramic fibre sleeve pipe 46 by adhesive, thereby the meaning that can achieve the goal, but also can select the manufacture method of other manufacture method as ceramic fibre sleeve pipe 46.
In the above-described embodiment, the number that the mold portion 11 that is arranged at melt vessel 10 has been described is 6 situation, but the number of mold portion 11 also can be any amount beyond 6.Moreover, in porcelain bushing 45, also can be quantity arbitrarily from the number of the circular port of the hole branch of single shape of slit.And then the number of conveyance workbench 12, pinch roll 13 and cutting machine 14 accessible zinc bar S also can be any amount beyond 6.
In the above-described embodiment, the situation that constitutes the shape of slit of along continuous straight runs extension about peristome 31 is illustrated, but the shape of peristome 31 also can be other shapes.
In the above-described embodiment, be that the situation of drum is illustrated about the inner surface of mold portion 11, but the inner surface of mold portion 11 also can be the shape beyond the drum.
In the above-described embodiment, the situation of carrying out the extraction of zinc bar S about pinch roll 13 intermittently is illustrated, but pinch roll 13 also can carry out the extraction of zinc bar S continuously.
In the above-described embodiment, the situation of hydraulic pressure that advances to the fused zinc L of mold portion 11 by the liquid level adjustment of adjusting the fused zinc L in the melt vessel 10 has been described, but also can have advanced to the hydraulic pressure of the fused zinc L of mold portion 11 by additive method adjustment.
In the above-described embodiment, illustrated that finding time during an extraction circulates when extracting zinc bar S intermittently out is 0.25 second, and dwell time is 0.75 second a situation, but when extracting zinc bar S out find time and the value of dwell time so long as dwell time is the relation more than 3 times of finding time just can be appropriate time arbitrarily.
In the above-described embodiment, illustrated that conveyance platform 7 is the situations that possess the formation of carrying roller, waited other formations but conveyance platform 7 also can be the formation that does not possess carrying roller.An example that does not possess the formation of carrying roller as conveyance platform 7, for example can be such formation: by the upper surface that makes conveyance platform 7 be the inclined plane, is configured in the entrance side of rollforming machine 3 thereby make the zinc bar S that is cut off by cutting machine 14 roll under the effect of gravity.In addition, the zinc bar S that will be configured in the entrance side of rollforming machine 3 so also can be set and be pressed into mechanism in the rollforming machine 3 one by one.
Embodiment
Use embodiment and comparative example explanation the present invention.
(1) zinc bar
In table 1 shown below～4, each data of embodiment 1～13 represent according to manufacture method of the present invention respectively, use each characteristic of the zinc bar that zinc bar manufacturing installation shown in Figure 11 makes, each data representation of comparative example 1～6 not to use each characteristic of the zinc bar that manufacture method of the present invention makes.
The condition of the liquid level of＜fused zinc (liquation pressure) relatively 〉
The comparative result of condition of the liquid level of the fused zinc in the melt vessel has been changed in expression in following table 1.Promptly, in each data of embodiment 1～4, according to manufacture method of the present invention, the liquid level of the fused zinc in the melt vessel is set at the height that exceeds upward more than the 250mm from peristome makes zinc bar, relative therewith, in the data of comparative example 1, the liquid level of fused zinc is set to exceed upward less than the height of 250mm from peristome makes zinc bar.
The following setting of other each conditions when in addition, making zinc bar.
The purity of zinc: 99.95%
The extraction action of zinc bar: interrupted
The rotary speed of pinch roll: 40mm/sec (=2400mm/min)
Finding time of zinc bar in circulation: 0.2sec
The dwell time of the zinc bar in circulation: 0.8sec
The average draw speed of zinc bar: 8mm/sec
This average draw speed can be from the rotary speed of pinch roll, find time and dwell time, obtains to be (0.2 * 40)+(0.8 * 0)/(0.2+0.8)=8mm/sec.
The temperature of the fused zinc in the peristome: 530～540 ℃
Moreover, in the quality hurdle of following table 1 record, be 7.1g/cm in the density of the zinc bar of manufacturing
3Judge quality good (mark zero) under the above situation, less than 7.1g/cm
3Situation under judge (mark *) of poor quality.
[table 1]
From above-mentioned table 1 as can be known, be set at from peristome at the liquid level that will advance to the fused zinc of mold portion according to the present invention and exceed upward under the situation of the height more than the 250mm, can produce density is 7.1g/cm
3Above high-quality zinc bar, relative therewith, the liquid level of fused zinc less than the situation of 250mm under the density of zinc bar of manufacturing less than 7.1g/cm
3
The condition of the average draw speed of＜zinc bar relatively 〉
The comparative result of condition of the average draw speed of zinc bar has been changed in expression in following table 2.Promptly, in each data of embodiment 5～8, according to manufacture method of the present invention, will the average draw speed when mold portion extracts the zinc (being zinc bar) that solidifies by cooling out be set at 9mm/sec and make zinc bar to get off, relative therewith, in the data of comparative example 2, average draw speed is set at above 9mm/sec makes zinc bar.In addition, about arbitrary data of embodiment 5～8 and comparative example 2, the extraction of zinc bar all is so that the extraction action of given time and the mode that stops to move of given time are carried out intermittently repeatedly.At this moment, finding time in the circulation (1 second) of extraction zinc bar is set at 0.2 second, and dwell time is set at 0.8 second.Moreover the average draw speed of the zinc bar of each data of embodiment 5～8 and comparative example 2 is set by the rotary speed of adjusting pinch roll.
The following setting of other each conditions when in addition, making zinc bar.
The purity of zinc: 99.9%
The height that the liquid level of zinc exceeds upward from peristome: 300mm
The temperature of the fused zinc in the peristome: 530～540 ℃
In addition, same with the situation of table 1 in the quality hurdle of following table 2 record, whether be 7.1g/cm according to the density of the zinc bar of manufacturing
3With on judge.
From above-mentioned table 2 as can be known, the average draw speed in the time will extracting the zinc solidify by cooling out from mold portion according to the present invention is set under the situation below the 9mm/sec, and can produce density is 7.1g/cm
3Above high-quality zinc bar, relative therewith, surpass the density of the zinc bar of manufacturing under the situation of 9mm/sec less than 7.1g/cm at average draw speed
3
＜finding time when extracting zinc bar out intermittently compared with the condition of dwell time 〉
The following comparative result of expression in following table 3: under the situation of extracting zinc bar intermittently out, the rotary speed of pinch roll is set at necessarily (35mm/sec (=2100mm/min), and changed the ratio with dwell time of finding time in the circulation (1 second) of extracting zinc bar out.Promptly, in each data of embodiment 9,10, according to manufacture method of the present invention, the dwell time of extracting out in the circulation is set at the length more than 3 times of finding time, so that fused zinc is fully made zinc bar with respect to extracting distance out with solidifying, relative therewith, in each data of comparative example 3,4, be set at less than 3 times that find time length ground and make zinc bar extracting dwell time in the circulation out.
The following setting of other each conditions when in addition, making zinc bar.
The purity of zinc: 99.99%
The height that the liquid level of zinc exceeds upward from peristome: 300mm
The temperature of the fused zinc in the peristome: 530～540 ℃
In addition, same with the situation of table 1 in the quality hurdle of following table 3 record, whether be 7.1g/cm according to the density of the zinc bar of manufacturing
3With on judge.
From above-mentioned table 3 as can be known, the dwell time in will casting the extraction circulation is set at the length more than 3 times of finding time and makes under the situation of zinc bar, and can produce density is 7.1g/cm
3Above high-quality zinc bar, relative therewith, the dwell time in will extracting circulation out is set at less than 3 times that find time length to be made under the situation of zinc bar, and the density of the zinc bar of manufacturing is less than 7.1g/cm
3
＜advance to mold portion fused zinc temperature condition relatively
Expression has been changed fused zinc in the peristome that advances to mold portion at the comparative result of the temperature conditions of the entrance side of mold portion in following table 4.That is, in each data of embodiment 11～13, according to manufacture method of the present invention, with the temperature that supplies to the fused zinc of mold portion be set at 530 ℃ with on make zinc bar, relative therewith, in each data of comparative example 5,6, the temperature of fused zinc is set at less than 530 ℃ makes zinc bar.Use chromel-alumel thermocouple, the temperature of the fused zinc in the position measurement peristome 31 of founding materials shown in Figure 2 30.The adjustment of fused zinc is by being undertaken by the fused zinc top in the burner heating melt vessel.
The following setting of other each conditions when in addition, making zinc bar.
The purity of zinc: 99.99%
The height that the liquid level of zinc exceeds upward from peristome: 300mm
The extraction action of zinc bar: interrupted
The rotary speed of pinch roll: 40mm/sec (=2400mm/min)
Finding time of zinc bar in circulation: 0.2sec
The dwell time of the zinc bar in circulation: 0.8sec
The average draw speed of zinc bar: 8mm/sec
This average draw speed can be from the rotary speed of pinch roll, find time and dwell time, obtains to be (0.2 * 40)+(0.8 * 0)/(0.2+0.8)=8mm/sec.
Moreover, same with the situation of table 1 in the quality hurdle of following table 4 record, whether be 7.1g/cm according to the density of the zinc bar of manufacturing
3With on judge.
[table 4]
From above-mentioned table 4 as can be known, the temperature of the fused zinc in the peristome of the entrance side that will supply to mold portion is set under the situation more than 530 ℃, and can produce density is 7.1g/cm
3Above high-quality zinc bar, relative therewith, under the temperature with the fused zinc in the peristome was set at less than 530 ℃ situation, the density of the zinc bar of manufacturing was less than 7.1g/cm
3
(2) zinc ball
In table 5 shown below, 6, each data of embodiment 14～20 represent to use according to manufacture method of the present invention each characteristic of the zinc ball of manufacturing installation M manufacturing shown in Figure 4 respectively, and each data representation of comparative example 7～10 does not use each characteristic of the zinc ball of manufacture method manufacturing of the present invention.
The condition of the temperature of the zinc bar during＜rollforming relatively 〉
The comparative result of the temperature conditions of the zinc bar S when in rollforming machine 3 shown in Figure 5 rollforming zinc bar S has been changed in expression in following table 5.Promptly, each data of embodiment 14～20 are according to manufacture method of the present invention, the temperature of zinc bar S is set at 70～180 ℃ and carries out rollforming in the time of will carrying out rollforming in rollforming machine 3, relative therewith, in each data of comparative example 7,8, be set at the temperature of zinc bar S less than 70 ℃ or surpass 180 ℃ and carry out rollforming, thereby make zinc ball B.The temperature of zinc bar S is measured by the temperature sensor 75 of the entrance side that is arranged on rollforming machine 3, carries out adjustment by spraying cooling water from the flexible pipe as cooling device 71 to zinc bar S.
Moreover in the visual examination hurdle of following table 5 record, the sphericity of the sphere of the zinc ball B by manufacturing is judged.As decision method, whether can not stop halfway and tumble along the inclined plane and to judge by zinc ball B being placed on the long inclined plane of the 1m that are inclined relative to horizontal 15 degree, observing.In addition, the surface of selling on the material use market as the inclined plane is the stainless steel of mirror status.Under situation about tumbling fully, be judged to be sphericity high-quality good (mark zero), be judged to be sphericity low quality poor (mark *) under the situation about stopping halfway.
[table 5]
From above-mentioned table 5 as can be known, the temperature of the zinc bar in the time will carrying out rollforming according to the present invention is set under 70～180 ℃ the situation, can produce the zinc ball of the high sphere of sphericity, relative therewith, less than 70 ℃ or surpass under 180 ℃ the situation, the zinc ball of manufacturing becomes the low sphere of sphericity in the temperature of zinc bar.
The condition of the temperature in the rollforming machine during＜rollforming relatively 〉
The comparative result of the temperature conditions in the rollforming machine 3 when in rollforming machine 3 shown in Figure 5 rollforming has been changed in expression in following table 6.Promptly, in each data of embodiment 18～20, according to manufacture method of the present invention, temperature in the rollforming machine 3 is set at 70～90 ℃ carries out rollforming, relative therewith, in each data of comparative example 9,10, be set at the temperature in the rollforming machine 3 less than 70 ℃ or surpass 90 ℃ and carry out rollforming, thereby make zinc ball B.Temperature in the rollforming machine 3 are measured by the temperature sensors in the housing 60 that is arranged on rollforming machine 3 77, carry out adjustment in the housing 60 by spray cooling water in rollforming machine 3 from the flexible pipe as cooling device 76.
In addition, in each data of embodiment 18～20 and comparative example 9,10, the temperature of the zinc bar S of rollforming all is set at 120 ℃.The temperature of zinc bar S is measured by the temperature sensor 75 of the entrance side that is arranged on rollforming machine 3, carries out adjustment by spraying cooling water from the flexible pipe as cooling device 71 to zinc bar S.
Moreover in the visual examination hurdle of following table 6 record, the sphericity of the sphere of the zinc ball B by manufacturing is judged.As decision method, whether can not stop halfway and tumble along the inclined plane and to judge by zinc ball B being placed on the long inclined plane of the 1m that are inclined relative to horizontal 15 degree, observing.Under situation about tumbling fully, be judged to be sphericity high-quality good (mark zero), be judged to be sphericity low quality poor (mark *) under the situation about stopping halfway.
[table 6]
From above-mentioned table 6 as can be known, temperature in the time will carrying out rollforming according to the present invention in the rollforming machine 3 is set under 70～90 ℃ the situation, can produce the zinc ball of the high sphere of sphericity, relative therewith, temperature in rollforming machine 3 is less than 70 ℃ or above under 90 ℃ the situation, the zinc ball of manufacturing becomes the low sphere of sphericity.
Industrial applicibility
The inventive example is as particularly useful when the casting device that is applied to from fused zinc casting zinc bar.
Claims (7)
1. a zinc bar is characterized in that, this zinc bar density is 7.1g/cm
3, purity is more than 99.9%.
2. the manufacture method of a zinc bar is made zinc bar by continuous casting, makes the fused zinc in the container advance and be cooled simultaneously to mold portion via the peristome that connects this container, it is characterized in that,
The height of the liquid level of the fused zinc in the said vesse is exceeded more than the 250mm upward from above-mentioned peristome, and extract the zinc that solidifies by cooling out with the average draw speed below the 9mm/sec from above-mentioned mold portion.
3. the manufacture method of zinc bar as claimed in claim 2 is characterized in that, the temperature of the fused zinc in the above-mentioned peristome is more than 530 ℃.
4. the manufacture method of zinc bar as claimed in claim 2 is characterized in that, when extracting above-mentioned cakey zinc out from above-mentioned mold portion, extracts out intermittently.
5. the manufacture method of a zinc ball by with the zinc bar rollforming, is cut off with set interval from front end and to be made the zinc ball, it is characterized in that,
When rollforming, the temperature of zinc bar is set at more than 70 ℃, below 180 ℃.
6. the manufacture method of zinc ball as claimed in claim 5 is characterized in that, the temperature in the rollforming machine is set at more than 70 ℃, below 90 ℃.
7. a zinc ball is characterized in that, density is 7.1g/cm
3More than, diameter is 18～55mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-100619 | 2006-03-31 | ||
| JP2006100619 | 2006-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780012000.1A Division CN101415507B (en) | 2006-03-31 | 2007-03-30 | Apparatus and method for casting zinc |
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| CN102101160A true CN102101160A (en) | 2011-06-22 |
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| CN2010106232536A Pending CN102101160A (en) | 2006-03-31 | 2007-03-30 | Apparatus and method for casting zinc |
| CN200780012000.1A Expired - Fee Related CN101415507B (en) | 2006-03-31 | 2007-03-30 | Apparatus and method for casting zinc |
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| WO2009119044A1 (en) | 2008-03-24 | 2009-10-01 | 株式会社クボタ | Pipe provided with corrosion prevention layer on the outside surface, process for production of the same, and process for production of alloy wires to be used for corrosion prevention of outside surface of the pipe |
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| CN1090231A (en) * | 1993-01-19 | 1994-08-03 | 洛阳铜加工厂研究所 | A kind of method and apparatus of horizontally continuous casting anti-skid strip |
| JP3690712B2 (en) * | 1998-11-18 | 2005-08-31 | 同和鉱業株式会社 | Cadmium continuous casting equipment |
| JP3885123B2 (en) * | 2000-07-05 | 2007-02-21 | Ｄｏｗａホールディングス株式会社 | Method for producing Zn-Al alloy wire |
| CN2595495Y (en) * | 2003-01-23 | 2003-12-31 | 李世荣 | Zinc rod continuous casting machine without oxygen |
| CN100376711C (en) * | 2003-11-14 | 2008-03-26 | 中国科学院海洋研究所 | Hot sprayed zinc-aluminium alloy wire rod and its preparing method |
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- 2007-03-30 CN CN2010106232536A patent/CN102101160A/en active Pending
- 2007-03-30 WO PCT/JP2007/057119 patent/WO2007114344A1/en active Application Filing
- 2007-03-30 CN CN200780012000.1A patent/CN101415507B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101415507A (en) | 2009-04-22 |
| CN101415507B (en) | 2015-05-20 |
| WO2007114344A1 (en) | 2007-10-11 |
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Application publication date: 20110622 |